débit constant

CONT: Les principaux types d'appareils de protection respiratoire isolants sont les appareils à air libre (...), les appareils à adduction d'air comprimé (du type à débit continu, du type à la demande et du type à la demande à pression positive) et les appareils autonomes (à circuit ouvert ou fermé).

CONT: Constant flow airline respirators give a continuous flow of air into facepiece of respirator maintaining a positive pressure inside the mask ensuring user of a consistently reliable source of respiratory protection.
CONT: There are three types of respiratory protection: air-purifying respirators, supplied-air respirators and self-contained breathing apparatus. ... Supplied-air respirators provide breathable air from an outside source and protect against very toxic particulates and gases at high concentrations. They have a compressed air source and an air hose connecting the air source to the breathing mask. The respirators may have half facepieces, full facepieces, hoods or helmets and the oxygen is supplied by pressure demand or continuous flow.
CONT: We offer a wide selection of continuous flow airline respirators and hoods, and pressure demand airline respirators....